Year	% of total labor force
1991	40.712601302789025
1992	40.950996020275205
1993	41.13275266982101
1994	41.45914028850226
1995	41.74666860188513
1996	41.979146029158315
1997	42.157632688304645
1998	42.38416926082305
1999	42.732996154993025
2000	42.984683911581385
2001	43.10372347093387
2002	43.38003363007758
2003	43.715991620015416
2004	43.95195060670393
2005	44.21162896581055
2006	44.457634693670585
2007	44.642719974097005
2008	44.84610469417776
2009	45.163824959473416
2010	45.365589708859844
2011	45.557143343438284
2012	45.76488100725447
2013	45.92818885432098
2014	46.06257246639844
2015	46.10335356107601
2016	46.21525496667641
2017	46.257739800484664
2018	46.29128679021131
2019	46.408825359887665
2020	46.41739194934123
2021	46.66634021949112
2022	46.71693043930637
2023	46.74577387866271